Equine red light therapy uses red and near-infrared wavelengths, usually delivered through a wrap, pad or handheld unit, as part of a yard routine. Most owners use it around work — before or after exercise — rather than as a response to a problem.
That distinction matters. A horse that is lame, sore, or has any acute change needs a vet, and in some cases needs one urgently. Light therapy has no role in an emergency and is not a way to find out whether something is serious.
What is equine red light therapy?
The device emits light at defined wavelengths — commonly around 660nm red and 850nm near-infrared — onto the horse's coat and skin over a set period. Near-infrared penetrates further than visible red, which is why equipment aimed at limbs and larger muscle groups emphasises it.
Equine equipment differs from human equipment mainly in form factor. A 500mm panel is impractical to hold against a moving horse's hock for six minutes. Wraps and pads that fasten in place solve the actual problem, which is keeping the emitter at a consistent distance from a large animal that would rather be eating.
Where on the horse do people use it?
In practice, the areas owners work on most are the ones that are easy to wrap and easy to reach: the lower limbs, the back, the hindquarters, the shoulder and the neck.
We are not going to list conditions it is used for. Claims that a device treats a named condition in an animal are regulated in the UK, and in the equine world specifically there is a real risk in implying that a light wrap is an appropriate response to something that needs a vet. Laminitis, any acute lameness, any hot or swollen limb, and any wound are veterinary matters, immediately and without exception.
Does the coat and feathering get in the way?
Yes, and more than most guides acknowledge.
A winter coat is a substantial barrier. Feathering on the lower limb of a cob or a draught breed is another. Both absorb and scatter light before it reaches skin.
Practically:
- The coat must be clean and dry. Mud and sweat sit between the emitter and the skin and are the most common reason a session achieves less than expected.
- Contact matters. Wraps that sit directly against the coat deliver more than a handheld unit waved at a distance.
- Clipped areas differ from unclipped ones. A clipped horse in winter is receiving a meaningfully different dose from an unclipped one at the same settings.
- Dark coats absorb more red light than light ones. Not a problem, just a variable.
How do you introduce it on the yard?
Most horses accept it quickly, because it is silent and produces only mild warmth. The object being fastened around a leg is the part they notice, not the light.
- Show them the unit switched off. Let them sniff it. Standard new-object routine.
- Fasten it without switching it on. A minute or two, then remove.
- First live session short. A couple of minutes, somewhere they are relaxed, with a haynet.
- Consistent location and time. Horses settle into routine faster than almost anything else.
- Stay with them. Do not leave a horse tied with equipment fastened to it and walk away.
For a genuinely anxious horse, working in the stable with a familiar person holding is usually easier than cross-ties.
How long is a session?
It depends entirely on the device's output and how close the emitters sit to the skin. A contact wrap and a handheld unit held 15cm away deliver very different doses in the same five minutes.
Use the protocol supplied with your equipment. If it did not come with one, ask the supplier before you start — an equine wrap without dosing guidance is incompletely specified.
As with the human devices, more is not better. Light therapy dosing appears to have an optimum rather than a linear relationship, and running long sessions on the assumption that it will help faster is not supported.
Before, after, or on rest days?
Most yards fit it around the existing routine rather than building a new one:
- Before work — as part of a warm-up routine, typically on the areas about to be worked
- After work — as part of a cool-down, once the horse is dry
- On rest days — as a standalone, usually the easiest to be consistent with
Consistency beats timing. A routine that actually happens four times a week at whatever time suits the yard is worth more than an optimal protocol that happens twice.
Practical points for yard use
- Battery or mains. Mains means a cable across a stable floor near a horse's feet. Battery units are almost always the right answer on a yard, and you should check the runtime against your session length.
- Cleaning. Equipment used on horses gets filthy. Check the manufacturer's cleaning guidance and whether any part is washable.
- Straps and fastenings. These are what fail first. Look for replaceable ones.
- Sharing between horses. Clean between animals as you would any shared tack, for the usual biosecurity reasons.
- Storage. Tack rooms get cold and damp. Check the operating and storage temperature range.
- Eyes. Do not direct the emitter at the horse's eyes, and take care working on the head and neck.
What to look for when choosing equine equipment
- Stated wavelengths in nanometres — not "red and infrared"
- Stated irradiance at a stated distance — mW/cm², not "powerful"
- A dosing protocol for equine use from the manufacturer
- Fit for the area you want to work on — a hock wrap and a back pad are not interchangeable
- Battery life that covers a full session with margin
- Robust construction — this equipment gets dropped, trodden on and rained on
Our equine range covers the devices we carry, including light wraps and PEMF straps.
When to stop and call the vet
Stop immediately and get veterinary advice if:
- Any new or worsening lameness appears
- A limb is hot, swollen, or painful to touch
- Your horse objects to an area they previously accepted
- There is any change to the skin under the equipment
- Your horse is showing any sign of acute discomfort
Separately: if your horse is competing, check the current rules for your discipline and governing body. Therapy device regulations differ between organisations and change periodically, and the responsibility sits with you rather than with the manufacturer.
Frequently asked questions
Is red light therapy safe for horses?
It is non-invasive and widely used on yards, but suitability depends on the individual horse and the situation. Speak to your vet before starting, especially with a horse that has any existing condition or is in work. Avoid directing the emitter at the eyes.
How long is an equine red light session?
It depends on the device's output and how close the emitters sit to the skin, so follow the protocol supplied with your equipment. A contact wrap and a handheld unit at a distance deliver very different doses over the same time.
Does it work through a winter coat?
Less light reaches the skin through a thick or muddy coat. Make sure the coat is clean and dry, use equipment that sits in contact rather than at a distance, and expect a clipped horse to receive more than an unclipped one at the same settings.
Can I use it on a horse that is lame?
Get the lameness diagnosed by a vet first. Light therapy is not a diagnostic tool, and using it on an undiagnosed problem risks delaying treatment for something that needs it.
Is it allowed in competition?
Rules on therapy devices vary between governing bodies and disciplines and are updated periodically. Check the current rules for your specific competition before use — the responsibility is the owner's or rider's.
This article is general information for horse owners and is not veterinary advice. Always consult a qualified veterinary surgeon about your horse's health, before starting any new routine, and about any change in your horse's condition. Any acute lameness, heat, swelling or suspected laminitis requires immediate veterinary attention.